J I C S. Volume 6 Number 1 March 2011 ISSN

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1 Capa JICS-v6n1-AF: Capa JICS-v6n1-AF 8/23/11 12:03 AM Page 1 J I C S ournal of ntegrated ircuits and ystems Volume 6 Number 1 March 2011 ISSN Special Section on Best SBCCI2010 Papers A Design Methodology Using the Inversion Coefficient for Low-Voltage Low-Power CMOS Voltage References Dalton Colombo, Christian Fayomi, Frederic Nabki, Luiz Ferreira, Gilson Wirth and Sergio Bampi A 5.4 GHz Fully-Integrated Low-Noise Mixer Stanley S. K. Ho and Carlos E. Saavedra A GALS Pipeline DES Architecture to Increase Robustness against CPA and CEMA Attacks Rafael Soares, Ney Calazans, Victor Lomné, Amine Dehbaoui, Philippe Maurine and Lionel Torres Efficient Interfacing of Partially Reconfigurable Instruction Set Extensions for Softcore CPUs on FPGAs Dirk Koch, Christian Beckhoff and Jim Torresen A Novel Macroblock-Level Filtering Upsampling Architecture for H.264/AVC Scalable Extension Thaísa Silva, Luis Cruz and Luciano Agostini Framework for Generating Configurable SAT Solvers Bernardo Vieira, Fabrício Andrade and Antônio Otávio Fernandes Regular Papers Oscillation Amplitude Analysis of MOS Hartley Oscillator Using a General Model Sadegh Raiessi Ardali, Sajad Ghatreh Samani and Babak Arzanifar Energy Harvesting Circuit Using Variable Capacitor with Higher Performance Helder Florentino, Dimitri Galayko, Raimundo Freire, Benedito Luciano and Caio Florentino Low power CMOS full adder design with body biasing approach Manoj Kumar, Sandeep Arya and Sujata Pandey

2 Sumario e Rostos-v6n1: Sumario e Rostos-v6n1 8/23/11 12:44 AM Page 1 J I C S ournal of ntegrated ircuits and ystems Volume 6 Number 1 March 2011 ISSN

3 Sumario e Rostos-v6n1: Sumario e Rostos-v6n1 8/23/11 12:44 AM Page 2 REVIEWERS Adoración Rueda Ana Isabela Cunha Antonio Cerdeira Dag Wisland Davies Monteiro Felipe Ghellar Fernando Rangel Fernando Paixão Cortes Fernando Silveira Franck Banag Gilson Wirth Janaína Guimarães Josias Mainardi Luis Guerra e Silva Marcelo Lubaszewski Marcelo Moraes Mauricio Ayala-Rincón Miodrag Potkonjak Olivier Sentieys Rafael Santos Raimundo Freire Renato Ribas Salvador Mir Serge Bernard Tatiana Santos Tiago Balen Wladek Grabinski

4 Sumario e Rostos-v6n1: Sumario e Rostos-v6n1 8/23/11 12:44 AM Page 3 CONTENTS Foreword...5 Special Section on Best SBCCI2010 Papers A Design Methodology Using the Inversion Coefficient for Low-Voltage Low-Power CMOS Voltage References Dalton Colombo, Christian Fayomi, Frederic Nabki, Luiz Ferreira, Gilson Wirth and Sergio Bampi...7 A 5.4 GHz Fully-Integrated Low-Noise Mixer Stanley S. K. Ho and Carlos E. Saavedra...18 A GALS Pipeline DES Architecture to Increase Robustness against CPA and CEMA Attacks Rafael Soares, Ney Calazans, Victor Lomné, Amine Dehbaoui, Philippe Maurine and Lionel Torres...25 Efficient Interfacing of Partially Reconfigurable Instruction Set Extensions for Softcore CPUs on FPGAs Dirk Koch, Christian Beckhoff and Jim Torresen...35 A Novel Macroblock-Level Filtering Upsampling Architecture for H.264/AVC Scalable Extension Thaísa Silva, Luis Cruz and Luciano Agostini...43 Framework for Generating Configurable SAT Solvers Bernardo Vieira, Fabrício Andrade and Antônio Otávio Fernandes...50 Regular Papers Oscillation Amplitude Analysis of MOS Hartley Oscillator Using a General Model Sadegh Raiessi Ardali, Sajad Ghatreh Samani and Babak Arzanifar...60 Energy Harvesting Circuit Using Variable Capacitor with Higher Performance Helder Florentino, Dimitri Galayko, Raimundo Freire, Benedito Luciano and Caio Florentino...68 Low power CMOS full adder design with body biasing approach Manoj Kumar, Sandeep Arya and Sujata Pandey...75

5 Sumario e Rostos-v6n1: Sumario e Rostos-v6n1 8/23/11 12:44 AM Page 5 FOREWORD This issue of the Journal of Integrated Circuits and Systems (JICS) features a very broad content, including papers on RF, AMS and digital design, presenting low voltage, low power and low noise solutions, improving the circuit robustness against attacks, proposing new approaches for video compression and dealing with reconfigurability, SAT solvers and energy harvesting. Six of these papers have been selected from the presentations given at SBCCI2010 (23rd Symposium on Integrated Circuits and Systems Design), which has been held in São Paulo, Brazil in Among the contributions presented at the Symposium, only a few best rated were selected by the JICS Editorial Board and have been invited to submit an extended version to the Journal. These papers have been reviewed by external experts and have been accepted for the special section on best SBCCI2010 papers. In addition to the best papers presented at the conference, three spontaneous submissions passed through the usual reviewing process and have been accepted as regular papers. We would like to thank the authors for their effort in preparing these high quality papers, as well as the reviewers for their help on paper selection, which guarantees the scientific level of this issue. We sincerely hope that JICS readers will enjoy these contributions. Marcelo Lubaszewski JICS Editor-in-chief Marcelo Pavanello JICS Co-Editor

6 3 Contra Capa-v6n1: 3 Contra Capa-v6n1 8/19/11 6:03 AM Page 1 JICS - Journal of Integrated Circuits and Systems Professor Marcelo Lubaszewski, Editor Departamento de Engenharia Elétrica, Universidade Federal do Rio Grande do Sul Av. Osvaldo Aranha CEP , Porto Alegre - RS Brazil Manuscript Preparation: General: Editors reserve the right to adjust style to certain standards of uniformity. Original manuscripts are discarded one month after publication unless the Publisher is asked to return original material after use. Please use Word or Word Perfect files for the text of your manuscript. Structure: We suggest following this order when typing manuscripts: Title, Authors, Affiliations, Abstract, Keywords, Main text, Acknowledgements, Appendix, References, Figure Captions and then Tables. Please supply figures imported into the text AND also separately as original graphics files. Collate acknowledgements in a separate section at the end of the article and do not include them on the title page, as a footnote to the title or otherwise. Text Layout: The manuscript must be typed using double spacing and wide A4 paper (3 cm) margins (Top, Bottom, Left, Right) with 12 pt Times New Roman font size up to 18 pages (maximum). Present tables and figure legends on separate pages at the end of the manuscript. All the manuscript pages must be numbered consecutively. Abstract: A self-contained abstract outlining in a single paragraph the aims, scope and conclusions of the paper must be supplied. Keywords: Immediately after the abstract, please provide a maximum of six keywords (avoid, for example, 'and', 'of'). Be sparing with abbreviations: only abbreviations firmly established in the field may be eligible. Symbols: As there is considerable variation in nomenclature and unit systems from country to country, authors are required to include a list of symbols, which they have used in their manuscripts, and of the units in which the corresponding qualities are measured. Another possibility is to define the symbols along the manuscript. SI units should be used where possible. Units: Follow internationally accepted rules and conventions: use the international system of units (SI). If other quantities are mentioned, give their equivalent in SI. Maths: Number consecutively any equations that have to be displayed separately from the text (if referred to explicitly in the text). References: All publications cited in the text should be presented in a list of references following the text of the manuscript. Along the text, indicate references by number(s) in square brackets in line with the text. The papers are submitted online following the link After acceptance, the author will be notified about the final paper format to be submitted for printing.